A substrate designed to be used as animal litter, for controlling insects, preferably flies, in which the substrate includes an absorbent substrate impregnated with at least one insect growth regulator (IGR) in a preferred determined concentration, and where the substrate is preferably impregnated with a formulation including, in addition to the growth regulator, a film-forming substance, a water insoluble particulate mineral material, an organic solvent, one or more additives and water. A method for obtaining the substrate impregnated with the formulation is also disclosed, as well as using the substrate as animal litter for controlling insects. Use of the waste resulting from the mix of the substrate with manure, after it has been used as animal litter, as organic compost for agricultural soils by subjecting it to a process of stabilization and degradation by means of biosolarisation is also disclosed.
